Atomistic Engineering of Phonons in Functional Oxide Heterostructures.

ABSTRACT: Engineering of phonons, that is, collective lattice vibrations in crystals, is essential for manipulating physical properties of materials such as thermal transport, electron-phonon interaction, confinement of lattice vibration, and optical polarization. Most approaches to phonon-engineering have been largely limited to the high-quality heterostructures of III-V compound semiconductors. Yet, artificial engineering of phonons in a variety of materials with functional properties, such as complex oxides, will yield unprecedented applications of coherent tunable phonons in future quantum acoustic devices. In this study, artificial engineering of phonons in the atomic-scale SrRuO₃ /SrTiO₃ superlattices is demonstrated, wherein tunable phonon modes are observed via confocal

SUBMITTER: Jeong SG 

PROVIDER: S-EPMC8895146 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature